# IC_Enable

## C Specification

      #include <nitro/os.h>

      BOOL IC_Enable( void );

## Description

Permits the use of all instruction cache

The return value is the use permission/prohibit setting of instruction cache before this function is called. When `TRUE`, use of the cache was permitted; when `FALSE`, it was prohibited.

## Internal Operation

Operates register 1 of the system control coprocessor.

## Arguments

None.

## Return Values

Previous permission/prohibition setting for instruction cache use.

## See Also

`IC_Disable, IC_Restore
`

## Revision History

12/22/2003 Initial Version